Lasting-machine



(No Model.) 7' 3 Sheets-Sheet 1. S. W. LADD.

LASTING MAUHINE.

No. 500,141. Patented June 27, 1893.

Fig.7

UNITED STATES- PATENT OFFICE.

SHERMAN W. LADD, OF SOMEItVILLE, MASSACHUSETTS.

LASTlNG-M ACH I N E.

SPEGIFICATION forming part of Letters Patent No. 500,141, dated June 27, 1893.

Application filed November 21, 1890. Serial No. 372,233- (No model.)

To aZZ whom it may concern:

Be it known that I, SHERMAN W. LADD, of Somerville, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain Improvements in Lasting-Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

elevation of the pinchers operating shaft to v which my present invention is applied and shows also the parts of the machine which support and in part operate said shaft. Fig. 3 is asection on line 3, 3, of Fig. 2. Figs. 4, 5, 6, 7, 8, 9, 10, and 11 are details connected with Fig. 2 and embody this, my present invention, all of which will be further described hereinafter.

In Letters Patent of the United States No. 423,922, granted to Charles S. Gooding and Sherman W. Ladd March 25, 1890, the con struction and operation of the general mechanism for performing the work of lasting boots or shoes are described in detail. Reference is hereby had to that specification for a description of parts not shown or described in this application.

In this specification such parts only of the machine are represented and described as are necessary in order to present, clearly, the construction of parts embodying this invention and the relation and connection of such parts with the machine as a whole. It may be here stated that the shoe is prepared for lasting, by first putting the upper on to the last, drawing it over at the toe and preferably at the sides and securing these overdrawn portions to the inner solo by tacks or other fastening devices. In completing the work oflasting the boot or which end the pinchers are 'given vertical and front-to-rear movement. At the heel and toe it becomes necessary to plait the upper to which end the pinchers are given a lateral movement in either direction in addition to the front-to-rear and vertical movements and it is to the construction and arrangement of mechanism for imparting to the pinchers these lateral or plaiting movements that my present invention specifically relates.

In Fig. 2 of the accompanying drawings is represented a rock-shaft, 56, which carries, on its front end, a driver head, 57.

In Fig. 1 of the accompanying drawings is represented the mechanism connecting the driver head, 57, with the pinchers proper the shank of one of which is indicated at 13. This connecting mechanism is fully described in Letters Patent No. 423,922, the only part of such connecting mechanism, designated by reference numeral in the drawings of this application being the rod 65. The shaft, 56, at the end of which is the driver head 57, is supported in a boss of the machine head and carries'a sectional gear, 59, that engages a correspondingly toothed rack on the end of lever, 60, to the end that tilting movements of the lever, 66, operate to give partial rotations to shaft, 56. The mechanism whereby lever, 60, is given a reciprocating tilting movement as also the reciprocating rotary movements imparted thereby to shaft, 56, and the effect of such movements on the pinchers to perform the plaiting operations are all set forth and described in detail in Letters Patent No. 423,922. To that specification reference is also had for a more detailed description of the construction and arrangement of shaft, 56 and its operative rocking mechanism. It may be here stated that the shaft, 56, has a continuous rocking movement and on the driver head, 57,

reciprocating rotary movement conformable to the rocking movements of shaft, 56, and" no motion is transmitted by the shaft, 56,to'

the pinchers. If, however, the pin, 64, is moved in either direction eccentric to the line of the axis of rotation of shaft, 56, it operates as a crank-pin, imparting to the pinchers lateral movements conformable to the vibrations of the pin, imparted thereto by the rocking shaft, 56.

' one direction eccentric to shaft, 56, for causing the pinchers to lay the plaits to oneside and in the opposite direction eccentric to shaft, 56, for causing the pinchers to lay the plai'ts to the other side" and when noplaiting movement is required the pin, 64, is brought into alignment with the shaft, 56, To the end that these described movements of pin,

64, may take place during the continuous operation of the machine and be shiftedand interchanged to suit the will of theoperator, a mechanism is interposed between the pin,64, and a lever operated by the knee of the workman whereby a movement of the kneelever to one side effects a corresponding movement of pin,64, to one side of shaft,56, and amovement of the knee lever in the opposite direetion, to oneside of the center line, effects a. corresponding movement of pin, 64, to the op-.

posite side of shaft, 56, the normal position of:

the knee lever being such as to hold the pin; 64, in alignment with shaft, 56. The mech-; anism interposed between pin, 64 and the saidknee-operated lever embodies this, my present invention and the, same I now proceed to describe as follows: i 1

The rock-shaft, 56 is constructed with a cen-- tral, longitudinal bore in whichis journaledi the shaft, 76. Said shaft, 76, carries on its front end a gear, 77, that meshes with a eorre-J spondingly toothed raek,-(not shown,) formed integral with the pin-supporting-slide, 63, (Fig. 1.) The shaft, 76, permits rotary reciprocating movements in its hearings, to the end that a partial rotation of the shaft, 76, in one direction, may be had in order to move the slide, 63, and consequently the pin, 64, to one side of the axis of rotation of shaft, 56,; and that an obverse partial rotation of the? shaft, 76, may be had in order to move the slide, 63, and consequently the pin, 64, to the. opposite side of the axis of rotation of shaft, 56.

In Fig. 2 of the drawings is shown a bell. crank lever, 68. Said lever is pivotally supported on the machine head frame and con- The pin, 64, is moved in ver, (not shown,) hereinbefore referred to.

Said lever and its connections intermediate the lever and bell crank lever, 68, are shown and described in Letters Patent No. 423,922. It may be here stated that a movement of the knee lever, in one direction, lifts and a movement thereof, in the opposite direction, past the normal center line, depresses the horizontal arm of bell crank lever, 68. The

vertical arm of bell crank lever, 68, is forked to embrace the collar, 74, (Fig. 3) through the medium of anti-frictional buttons interposed in the branches of the lever and projected into a circumferential groove formed in the collar, as shown, (see Figs. 2, 3.) The collar, 74, is supported on the rock-shaft, 56

an obverse move nent of the collar, 74, on its shaft, 7 6, through an opening in theshaft, 56,

(see Fig, 10,) to operate in the earn-groove,

70, of collar, 74, asshown in, Fig. 3. The collar,74, is, arranged with a groove and key connection to the shaft, 56, so as to permit movement on the shaft longitndinallyand to participate in the rotary rocking movements of the shaft.

From theforegoing description t w ll be understood that a movementof the collar, 74,

in one direction, forcesone side of the camvgroove, 70, to bear upon the pin, 75, and a further movement of the collar moves the pin thereby partially rotating the shaft, 76,and ng h s e, 6 and con eque t y' pin, 64, out of alignment, to one side of" the rock-shaft, 56. An obverse longitudinal movement ofcollar, 74, operates. in a likemanner to force the opposite side" of cam groove, 70, against the pin,'75, and the movement of the collar, being suificiently continued, the pin,

horizontal arm of hell crank lever, 68, efiects supporting shaft, 56. In the collar 74, (see Fig. 8) is a spiral cam-groove, '70, In the shaft, .76, is set a pin, 75, (see Figs.,.4, 5, 6 and 3.) .This pin is i projected outwardly fromthe too 75, and with it shaft, 76, iscarried' to the opposite direction and etfects a movement of the slide, 63, and conseqnently the pin, 64, to the opposite side of the line or axis of rotation of shaft, 56.

The construction and arrangement of the mefihflnism herein described is in practice found to be more economical in construction, more prompt and responsive in action than the mechanism described in said Letters Pat out No. 423,922 for efiecting the same operation of the pinchers.

I claim- In a lasting machine the described combination of the rock-shaft, 56, a slide, 63, having crank-pin, 64, supported movably 0n the shaft, 56, the shaft, 76, journaled to permit rocking movements in the shaft, 56, and engaging, at one end, the slide, 63', the collar, 74 having spiral-cam-groove, 70, supported to permit longitudinal movement on shaft, 56, and a pin in the shaft, 76 extending outwardly through shaft, 56, into the cam groove, 70, of

the collar, 74, with a pivotally supported pinchers mechanism all substantially as described. to

Signed at Boston this 2d day of November,

SHERMAN WV. LADD. Witnesses:

J OHN TIERNEY, O. B. TUTTLE. 

